Arm chair



FIG. 1 is a front perspective view showing the new design;

FIG. 2 is front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof,

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a front perspective view showing the chair in a reclined position.

The broken lines shown are for illustrative purposes only and no part of the claimed design. 

The ornamental design for an arm chair, as shown and described. 